backend.yaml

apiVersion: apps/v1
kind: Deployment
metadata:
  name: backend-deployment
spec:
  selector:
    matchLabels:
      app: backend
  replicas: 3
  template:
    metadata:
      name: backend
      labels:
        app: backend
        env: dev
        author: Shiplu
        type: api
    spec:
      containers:
        - name: backend
          image: $K8_BACKEND_IMAGE
          ports:
          - containerPort: 8080
          lifecycle:
            preStop:
              exec:
                command: [ "/usr/bin/curl", "-XPOST", "http://localhost:8080/actuator/shutdown" ]
          readinessProbe:
            initialDelaySeconds: 5
            timeoutSeconds: 1
            httpGet:
              path: /actuator/health
              port: 8080
          livenessProbe:
            initialDelaySeconds: 5
            timeoutSeconds: 1
            httpGet:
              path: /actuator/health
              port: 8080
---
apiVersion: v1
kind: Service
metadata:
  name: backend-service
  annotations:
    cloud.google.com/neg: '{"ingress": true}'
spec:
  type: LoadBalancer
  ports:
  - port: 80
    targetPort: 8080
    protocol: TCP
  selector:
    app: backend
---
apiVersion: autoscaling/v1
kind: HorizontalPodAutoscaler
metadata:
  name: backend-deployment-autoscaling
spec:
  maxReplicas: 5
  minReplicas: 2
  scaleTargetRef:
    apiVersion: extensions/v1beta1
    kind: Deployment
    name: backend-deployment
  targetCPUUtilizationPercentage: 80
status:
  currentCPUUtilizationPercentage: 2
  currentReplicas: 3
  desiredReplicas: 3